I have to admit that I renewed my subscription to .mac (now mobileme) largely due to the concept of "exchange for the rest of us." I have multiple machines and synchronicity is an issue. Of course like all technologies, the promise is greater than the delivery. And in this case, mobileme had some serious issues. As in stuff not working. So now Apple has issued a public mea culpa and is giving people a free month of service. Well that's all fine and dandy, but I have to admit that there are workarounds (kludges, hacks, etc) that obviate mobileme at least for my purposes. Tools are supposed to obviate hacks, but sometimes necessity is the mother of invention.
Maybe some day a tech company will get it right. But I wouldn't hold my breath. Apple gets closer than the rest, but they still have a ways to go, especially in managing our "digital world." Of course I could just throw things away...